[go: up one dir, main page]

BR8207573A - PERFECT PROCESS FOR THE GENERATION OF NITROGEN WITH HIGH PURITY AND APPARATUS - Google Patents

PERFECT PROCESS FOR THE GENERATION OF NITROGEN WITH HIGH PURITY AND APPARATUS

Info

Publication number
BR8207573A
BR8207573A BR8207573A BR8207573A BR8207573A BR 8207573 A BR8207573 A BR 8207573A BR 8207573 A BR8207573 A BR 8207573A BR 8207573 A BR8207573 A BR 8207573A BR 8207573 A BR8207573 A BR 8207573A
Authority
BR
Brazil
Prior art keywords
nitrogen
generation
high purity
perfect process
perfect
Prior art date
Application number
BR8207573A
Other languages
Portuguese (pt)
Inventor
Frey Bill
Haynie Mark
Psaras John
Original Assignee
Bergwerksverband Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bergwerksverband Gmbh filed Critical Bergwerksverband Gmbh
Publication of BR8207573A publication Critical patent/BR8207573A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C01B21/045—Physical processing only by adsorption in solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B01D2253/108—Zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/116—Molecular sieves other than zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/25—Coated, impregnated or composite adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/10—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/104—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40001—Methods relating to additional, e.g. intermediate, treatment of process gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
    • B01D2259/40043—Purging
    • B01D2259/4005—Nature of purge gas
    • B01D2259/40052—Recycled product or process gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/40—Further details for adsorption processes and devices
    • B01D2259/402—Further details for adsorption processes and devices using two beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0423—Beds in columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/261—Drying gases or vapours by adsorption

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
BR8207573A 1981-12-30 1982-12-29 PERFECT PROCESS FOR THE GENERATION OF NITROGEN WITH HIGH PURITY AND APPARATUS BR8207573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/334,463 US4439213A (en) 1981-12-30 1981-12-30 Nitrogen generation system

Publications (1)

Publication Number Publication Date
BR8207573A true BR8207573A (en) 1983-10-25

Family

ID=23307322

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8207573A BR8207573A (en) 1981-12-30 1982-12-29 PERFECT PROCESS FOR THE GENERATION OF NITROGEN WITH HIGH PURITY AND APPARATUS

Country Status (8)

Country Link
US (1) US4439213A (en)
EP (1) EP0085155B1 (en)
JP (1) JPS58120504A (en)
AU (1) AU553233B2 (en)
BR (1) BR8207573A (en)
CA (1) CA1201663A (en)
DE (1) DE3269733D1 (en)
ZA (1) ZA829024B (en)

Families Citing this family (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4983190A (en) * 1985-05-21 1991-01-08 Pall Corporation Pressure-swing adsorption system and method for NBC collective protection
JPS62117612A (en) * 1985-11-16 1987-05-29 Kobe Steel Ltd Regenerating method for adsorption tower
US4711645A (en) * 1986-02-10 1987-12-08 Air Products And Chemicals, Inc. Removal of water and carbon dioxide from atmospheric air
US4770676A (en) * 1986-05-16 1988-09-13 Air Products And Chemicals, Inc. Recovery of methane from land fill gas
US4732580A (en) * 1986-10-01 1988-03-22 The Boc Group, Inc. Argon and nitrogen coproduction process
US4902309A (en) * 1987-06-24 1990-02-20 Hempenstall George T Improved method for the ignition and combustion of particulates in diesel exhaust gases
US4813981A (en) * 1987-09-21 1989-03-21 Sexton John M Dual mode air purifier and method
US4790860A (en) * 1987-09-21 1988-12-13 Sexton John M Dual mode air purifier and method
US4881953A (en) * 1988-09-15 1989-11-21 Union Carbide Corporation Prevention of membrane degradation
US5004482A (en) * 1989-05-12 1991-04-02 Union Carbide Corporation Production of dry, high purity nitrogen
US4931070A (en) * 1989-05-12 1990-06-05 Union Carbide Corporation Process and system for the production of dry, high purity nitrogen
US5268021A (en) * 1989-11-20 1993-12-07 Dynotec Corporation Fluid fractionator
DE3941487C1 (en) * 1989-12-15 1991-04-25 Bergwerksverband Gmbh, 4300 Essen, De
JP2619839B2 (en) * 1990-01-31 1997-06-11 鐘紡株式会社 Nitrogen gas separation method
US4971609A (en) * 1990-02-05 1990-11-20 Pawlos Robert A Portable oxygen concentrator
US5084075A (en) * 1990-04-10 1992-01-28 Air Products And Chemicals, Inc. Vacuum swing adsorption process for production of 95+% n2 from ambient air
US5090973A (en) * 1990-10-23 1992-02-25 The Boc Group, Inc. Psa employing high purity purging
US5135548A (en) * 1991-05-08 1992-08-04 Air Products And Chemicals, Inc. Oxygen selective desiccants
JP3215713B2 (en) * 1992-03-17 2001-10-09 クラレケミカル株式会社 Nitrogen gas separation method
US5226933A (en) * 1992-03-31 1993-07-13 Ohio State University Pressure swing adsorption system to purify oxygen
US5441558A (en) * 1994-08-09 1995-08-15 Air Products And Chemicals, Inc. High purity nitrogen PSA utilizing controlled internal flows
US5531809A (en) * 1994-09-14 1996-07-02 Air Products And Chemicals, Inc. Pretreatment layer for CO-VSA
DE4435702C2 (en) * 1994-10-06 1998-11-26 Druckluft Dannoehl Gmbh Method and device for producing nitrogen
US5924419A (en) * 1995-05-22 1999-07-20 Kotliar; Igor K. Apparatus for passive hypoxic training and therapy
US5647891A (en) * 1995-09-22 1997-07-15 The United States Of America As Represented By The Secretary Of The Navy Method and apparatus for heated, pressure-swing high pressure air dehydration
US5906674A (en) * 1997-12-16 1999-05-25 The Boc Group, Inc. Process and apparatus for separating gas mixtures
JP3524527B2 (en) * 2001-09-05 2004-05-10 日本酸素株式会社 Adsorbent and method and apparatus for producing nitrogen using the same
US6607100B2 (en) * 2001-11-26 2003-08-19 Vin Valet, Inc. Wine or champagne preservation and dispensing apparatus
US7022283B2 (en) * 2001-11-26 2006-04-04 Vin Valet, Inc. Apparatus and method for preserving collectible items
US6660065B2 (en) * 2002-05-06 2003-12-09 Litton Systems, Inc. Pressure swing adsorption dryer for pneumatically driven pressure intensifiers
DE10226485A1 (en) * 2002-06-14 2005-06-23 Infineon Technologies Ag Semiconductor memory with address decoding unit
CN100455181C (en) * 2003-05-02 2009-01-21 液体空气乔治洛德方法利用和研究的具有监督和管理委员会的有限公司 Drying cabinet for moisture sensitive device management in electronic device manufacturing
US20040221475A1 (en) * 2003-05-02 2004-11-11 Martin Theriault Dry cabinets for use in moisture sensitive device management in electronics manufacturing
US20090205493A1 (en) * 2008-02-20 2009-08-20 Thompson Loren M Method of removing water from an inlet region of an oxygen generating system
US20090238979A1 (en) * 2008-03-21 2009-09-24 William Decesare Method of Applying Catalytic Solution for Use in Electroless Deposition
AU2013207783B2 (en) 2012-01-13 2017-07-13 Lummus Technology Llc Process for providing C2 hydrocarbons via oxidative coupling of methane and for separating hydrocarbon compounds
US9969660B2 (en) 2012-07-09 2018-05-15 Siluria Technologies, Inc. Natural gas processing and systems
US9598328B2 (en) 2012-12-07 2017-03-21 Siluria Technologies, Inc. Integrated processes and systems for conversion of methane to multiple higher hydrocarbon products
WO2015081122A2 (en) 2013-11-27 2015-06-04 Siluria Technologies, Inc. Reactors and systems for oxidative coupling of methane
US10301234B2 (en) 2014-01-08 2019-05-28 Siluria Technologies, Inc. Ethylene-to-liquids systems and methods
CA3225180A1 (en) 2014-01-09 2015-07-16 Lummus Technology Llc Oxidative coupling of methane implementations for olefin production
US10377682B2 (en) 2014-01-09 2019-08-13 Siluria Technologies, Inc. Reactors and systems for oxidative coupling of methane
CN104340961B (en) * 2014-11-18 2016-08-31 武汉恒业通气体设备有限公司 THE PRESSURE SWING ADSORPTION OXYGEN GENERATING DEVICE and method
US10793490B2 (en) 2015-03-17 2020-10-06 Lummus Technology Llc Oxidative coupling of methane methods and systems
US9334204B1 (en) 2015-03-17 2016-05-10 Siluria Technologies, Inc. Efficient oxidative coupling of methane processes and systems
US20160289143A1 (en) 2015-04-01 2016-10-06 Siluria Technologies, Inc. Advanced oxidative coupling of methane
US9328297B1 (en) 2015-06-16 2016-05-03 Siluria Technologies, Inc. Ethylene-to-liquids systems and methods
US9932234B2 (en) * 2015-07-13 2018-04-03 Hamilton Sundstrand Corporation Membrane-based air separation module
WO2017065947A1 (en) 2015-10-16 2017-04-20 Siluria Technologies, Inc. Separation methods and systems for oxidative coupling of methane
EP3442934A4 (en) 2016-04-13 2019-12-11 Siluria Technologies, Inc. OXIDIZING COUPLING OF METHANE FOR THE PRODUCTION OF OLEFINS
US20180169561A1 (en) 2016-12-19 2018-06-21 Siluria Technologies, Inc. Methods and systems for performing chemical separations
AU2018273238B2 (en) 2017-05-23 2022-02-10 Lummus Technology Llc Integration of oxidative coupling of methane processes
RU2020102298A (en) 2017-07-07 2021-08-10 Люммус Текнолоджи Ллс SYSTEMS AND METHODS FOR OXIDATIVE COMBINATIONS OF METHANE
US20190308344A1 (en) * 2018-04-04 2019-10-10 Novatec, Inc. Method and apparatus for polymer drying using inert gas
US11364657B2 (en) 2018-04-04 2022-06-21 Novatec, Inc. Reducing moisture in granular resin material using inert gas
US11007473B2 (en) * 2018-07-09 2021-05-18 University Of South Carolina Removal of water vapor from streams containing carbon dioxide and/or carbon monoxide
CN108918789A (en) * 2018-09-08 2018-11-30 深圳市能源环保有限公司 A kind of purge gass air supply system of the continuous on-line monitoring system of power-plant flue gas
CN110812997B (en) * 2019-10-25 2022-03-15 仪征祥源动力供应有限公司 Air classification filtering and drying device for air compressor
CN111359371A (en) * 2020-03-30 2020-07-03 浙江勤策空分设备有限公司 PSA nitrogen making equipment for treating tail gas
IT202100004559A1 (en) * 2021-02-26 2022-08-26 Nardi Compressori S R L EQUIPMENT FOR THE TREATMENT OF HIGH PRESSURE GAS MIXTURES
CN118302400A (en) 2021-08-31 2024-07-05 鲁玛斯科技有限责任公司 Methods and systems for performing oxidative coupling of methane
WO2023033748A1 (en) * 2021-09-06 2023-03-09 Vattanapuripakorn Wenich Conceptual design for new method of power generation plant using pressurized gaseous nitrogen
US12504203B2 (en) 2023-02-10 2025-12-23 EnhancedGEO Holdings, LLC Reverse-flow magma-based geothermal generation
CN117258479A (en) * 2023-09-05 2023-12-22 龙门金南磁性材料有限公司 Nitrogen supply system for aerosolization powder making equipment
US20250136457A1 (en) * 2023-10-30 2025-05-01 EnhancedGEO Holdings, LLC Geothermally driven ammonia production

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2944627A (en) * 1958-02-12 1960-07-12 Exxon Research Engineering Co Method and apparatus for fractionating gaseous mixtures by adsorption
US3140931A (en) * 1960-12-01 1964-07-14 Union Carbide Corp Separation of an oxygen-nitrogen mixture
US3225516A (en) * 1963-04-15 1965-12-28 C M Kemp Mfg Co Method and apparatus for purifying gaseous mixtures by cyclic adsorption
DE1817004C3 (en) * 1967-12-27 1981-10-29 Takaaki Prof. Dr. Tokyo Tamura Process for the production of oxygen from ordinary air by adsorption
GB1298818A (en) * 1968-12-20 1972-12-06 Kobe Steel Ltd Separation of oxygen from air
US4015956A (en) * 1971-04-23 1977-04-05 Bergwerksverband Gmbh Process and arrangement for the enrichment of gases
GB1364674A (en) * 1971-04-23 1974-08-29 Bergwerksverband Gmbh Carbon-containing molecular sieves
DE2260872A1 (en) * 1972-12-13 1974-06-27 Babcock & Wilcox Ag METHOD OF GENERATING NITROGEN FOR USE AS AN INERT GAS AND DEVICE FOR USE
GB1449864A (en) * 1973-10-24 1976-09-15 Boc International Ltd Adsorption system
US3957463A (en) * 1973-12-12 1976-05-18 Air Products And Chemicals, Inc. Oxygen enrichment process
US4011065A (en) * 1974-01-09 1977-03-08 Bergwerksverband Gmbh Process for the enrichment of gases
US3967464A (en) * 1974-07-22 1976-07-06 Air Products And Chemicals, Inc. Air separation process and system utilizing pressure-swing driers
DE2652486C2 (en) * 1976-11-18 1987-01-08 Bergwerksverband Gmbh, 4300 Essen Process for the production of nitrogen-rich gases from gases containing N↓2↓ and at least O↓2↓, such as air
JPS5372785A (en) * 1976-12-10 1978-06-28 Tourishiya Kk Mixed gas separation method and apparatus by pressure swing method
US4256469A (en) * 1978-11-06 1981-03-17 Linde Aktiengesellschaft Repressurization technique for pressure swing adsorption
JPS5827480B2 (en) * 1979-02-14 1983-06-09 株式会社日立製作所 Dehumidification tower regeneration method for rare gas hold-up equipment
US4264340A (en) * 1979-02-28 1981-04-28 Air Products And Chemicals, Inc. Vacuum swing adsorption for air fractionation
US4249915A (en) * 1979-05-30 1981-02-10 Air Products And Chemicals, Inc. Removal of water and carbon dioxide from air
DE2932333C2 (en) * 1979-08-09 1986-08-07 Bergwerksverband Gmbh, 4300 Essen Process for the adsorptive separation of gas mixtures containing at least nitrogen in addition to nitrogen
ZA811931B (en) * 1980-03-31 1982-05-26 African Oxygen Ltd Process and apparatus for the separation of gaseous mixture
US4329158A (en) * 1980-06-13 1982-05-11 Air Products And Chemicals, Inc. Air fractionation by pressure swing adsorption

Also Published As

Publication number Publication date
JPS58120504A (en) 1983-07-18
US4439213A (en) 1984-03-27
AU9143482A (en) 1983-07-07
JPH0587286B2 (en) 1993-12-16
AU553233B2 (en) 1986-07-10
DE3269733D1 (en) 1986-04-10
EP0085155B1 (en) 1986-03-05
EP0085155A1 (en) 1983-08-10
CA1201663A (en) 1986-03-11
ZA829024B (en) 1983-09-28

Similar Documents

Publication Publication Date Title
BR8207573A (en) PERFECT PROCESS FOR THE GENERATION OF NITROGEN WITH HIGH PURITY AND APPARATUS
BR8604615A (en) PROCESS AND LINE FOR THE PRODUCTION OF CABLES
PT80446B (en) NEW PROCESS FOR THE SYNDROME OF PIRIDO-IMIDAZO-RIFAMICINAS
BR8406657A (en) PROCESS FOR INCREASING THE FORJABILITY OF A NICKEL-BASED SUPERLINK ITEM AND THE FORGETABLE ITEM OBTAINED
BR8800472A (en) PROCESS AND APPARATUS TO MAKE GAS FLOODED PACKAGES
BR8400464A (en) PROCESS FOR THE PRODUCTION OF PURE METALLIC SILICIO
BR8603303A (en) DEVICE AND PROCESS FOR THE PRODUCTION OF A TUBULAR OBJECT
BR8604182A (en) PROCESS FOR THE PRODUCTION OF ETERES
BR8101512A (en) PROCESS FOR THE PRODUCTION OF ETHANES CONTAINING FLUOR, OF HIGH PURITY
BR8207843A (en) PROCESS AND APPARATUS FOR THE MANUFACTURE OF METAL COMPONENTS
BR7706929A (en) FLUOR PRODUCTION PROCESS AND APPARATUS
BR8200811A (en) PROCESS FOR THE PRODUCTION OF TIURAM DISSULPHETS
BR8008990A (en) PROPULSION SET AND PROCESS FOR THE SAME PRODUCTION
BR8800388A (en) PROCESS FOR THE DEGULATION OF GASES
BR8108082A (en) CAPACITOR AND PROCESS AND APPARATUS FOR THE SAME PRODUCTION
BR8106164A (en) TIGHTENING EQUIPMENT AND PROCESS FOR THE PRODUCTION OF TIGHTENING WRENCHES
BR8403972A (en) PROCESS FOR THERMAL DECOMPOSITION OF 1,2-DICLOROETHANE
BR8305921A (en) PROCESS AND DEVICE FOR THE PRODUCTION OF SYNTHESIS GAS
BR8204766A (en) PROCESS FOR THE PRODUCTION OF 2-CHLOROPYRIDINES
BR8203713A (en) PROCESS FOR THE PRODUCTION OF ALKANIS
BR8203793A (en) PROCESS FOR THE PRODUCTION OF ALKANIS
IT8420300A0 (en) PROCESS AND APPARATUS FOR THE PRODUCTION OF CARBON BLACK.
BR8602420A (en) PROCESS FOR FORMING BUTYL-TOLUENODIAMINE MONOTERCIARY
BR8307733A (en) PROCESS FOR THE MANUFACTURE OF ITRIO SILICIO OXINITRETES
BR8207403A (en) PROCESS AND RELATED DEVICE FOR THE MANUFACTURE OF PNEUMATICS

Legal Events

Date Code Title Description
B21A Expiry acc. art. 78, item i of ipl- expiry of the term of protection

Free format text: PATENTE EXTINTA EM 29/12/97